[INFO] fetching crate smolapps 0.1.4...
[INFO] testing smolapps-0.1.4 against try#8de4c7234dd9b97c9d76b58671343fdbbc9a433e+target=x86_64-unknown-linux-musl for musl_upgrade_1_2_5_with_getrandom_patch_0
[INFO] extracting crate smolapps 0.1.4 into /workspace/builds/worker-2-tc1/source
[INFO] started tweaking crates.io crate smolapps 0.1.4
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate smolapps 0.1.4
[INFO] tweaked toml for crates.io crate smolapps 0.1.4 written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate smolapps 0.1.4 on toolchain 8de4c7234dd9b97c9d76b58671343fdbbc9a433e
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8de4c7234dd9b97c9d76b58671343fdbbc9a433e" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate smolapps 0.1.4 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8de4c7234dd9b97c9d76b58671343fdbbc9a433e" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded managed v0.7.1
[INFO] [stderr]   Downloaded hermit-abi v0.1.13
[INFO] [stderr]   Downloaded smoltcp v0.6.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+8de4c7234dd9b97c9d76b58671343fdbbc9a433e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 507016ffcbdac44e9d2f54c07c325cd2b657eddea4b6a8b3bf4154b5fc1e4fe6
[INFO] running `Command { std: "docker" "start" "-a" "507016ffcbdac44e9d2f54c07c325cd2b657eddea4b6a8b3bf4154b5fc1e4fe6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "507016ffcbdac44e9d2f54c07c325cd2b657eddea4b6a8b3bf4154b5fc1e4fe6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "507016ffcbdac44e9d2f54c07c325cd2b657eddea4b6a8b3bf4154b5fc1e4fe6", kill_on_drop: false }`
[INFO] [stdout] 507016ffcbdac44e9d2f54c07c325cd2b657eddea4b6a8b3bf4154b5fc1e4fe6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+8de4c7234dd9b97c9d76b58671343fdbbc9a433e" "build" "--frozen" "--message-format=json" "--target" "x86_64-unknown-linux-musl", kill_on_drop: false }`
[INFO] [stdout] d526164a3408c2790743726ee8637563a7abfedba1c19f4c99d930747b18ba1b
[INFO] running `Command { std: "docker" "start" "-a" "d526164a3408c2790743726ee8637563a7abfedba1c19f4c99d930747b18ba1b", kill_on_drop: false }`
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling managed v0.7.1
[INFO] [stderr]    Compiling smoltcp v0.6.0
[INFO] [stderr]    Compiling smolapps v0.1.4 (/opt/rustwide/workdir)
[INFO] [stdout] error: unknown `doc` attribute `shown`
[INFO] [stdout]   --> src/macros.rs:46:26
[INFO] [stdout]    |
[INFO] [stdout] 46 |                   $( #[doc(shown)] $variant = $value ),+
[INFO] [stdout]    |                            ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/wire/tftp.rs:12:1
[INFO] [stdout]    |
[INFO] [stdout] 12 | / enum_with_unknown! {
[INFO] [stdout] 13 | |     /// One of the possible operations supported by TFTP.
[INFO] [stdout] 14 | |     pub enum OpCode(u16) {
[INFO] [stdout] 15 | |         Read = 1,
[INFO] [stdout] ...  |
[INFO] [stdout] 21 | | }
[INFO] [stdout]    | |_- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[deny(invalid_doc_attributes)]` on by default
[INFO] [stdout]    = note: this error originates in the macro `enum_with_unknown` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unknown `doc` attribute `shown`
[INFO] [stdout]   --> src/macros.rs:46:26
[INFO] [stdout]    |
[INFO] [stdout] 46 |                   $( #[doc(shown)] $variant = $value ),+
[INFO] [stdout]    |                            ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/wire/tftp.rs:23:1
[INFO] [stdout]    |
[INFO] [stdout] 23 | / enum_with_unknown! {
[INFO] [stdout] 24 | |     /// One of the possible error codes found in a TFTP error packet.
[INFO] [stdout] 25 | |     pub enum ErrorCode(u16) {
[INFO] [stdout] 26 | |         Undefined = 0,
[INFO] [stdout] ...  |
[INFO] [stdout] 35 | | }
[INFO] [stdout]    | |_- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this error originates in the macro `enum_with_unknown` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `smolapps` (lib) due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "d526164a3408c2790743726ee8637563a7abfedba1c19f4c99d930747b18ba1b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d526164a3408c2790743726ee8637563a7abfedba1c19f4c99d930747b18ba1b", kill_on_drop: false }`
[INFO] [stdout] d526164a3408c2790743726ee8637563a7abfedba1c19f4c99d930747b18ba1b